Is there a such too much power for speakers?

I don’t have the scratch to be an ultra-high end user like most of you appear to be, but just received a Musical Paradise MK III. Rated at 6.5 w/ch.
Using B&W DM 630’s. Cost: $360 for the integrated tube amp from a previous one-owner.
At 12 o’clock, that thing could blow out your eardrums. No distortion detected.
Not going to try, either.

Oh, I got this amp ,yesterday afetrnoon, so I’m not fully familiar with its characteristics, yet.
 I will say the highs sparkle and there is plenty of solid bottom at my neighbors' non-disturbing level.
Gabriel and Genesis sounded great as did Caravan, Gong and Enya.
Going to try Cusco and Weather Report. today.

Not sure if I posted this,
but years back, mid 90’s I think?

 I had a nice pair of altec Lansing m508’s, powered by carvin dcm 2000 amps in bridge mono bloc version.

i was sending enough watts to make those speakers sing.
  Always careful of the volume, but the effortless, and very airy, sound was great.

the amps were great, but not reliable, so I gave them to my cousin 
  
 More watts=better

I have one of these amps on order, and I noticed this conversation from the engineers blog about power and clipping
Look at "Amplifiers for the future of High Performance Audio" post ....

https://legacyaudio.com/backstage/perspective/